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Virtual network routing to dynamic end point locations in support of service-based traffic forwarding

  • US 10,630,576 B2
  • Filed: 02/23/2017
  • Issued: 04/21/2020
  • Est. Priority Date: 08/05/2016
  • Status: Active Grant
First Claim
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1. A method for routing packets to a destination end point over a virtual network (VN) pre-configured on a network, the routing performed by a VN virtual router (v-router) associated with a VN node of the VN, the VN node supported by an associated physical network node of the network and interconnected with other VN nodes of the VN by logical tunnels, the method comprising the v-router:

  • receiving a data packet associated with the VN and specifying the destination end point;

    obtaining an indication of location of the destination end point from a connection management (CM) entity tracking the end point;

    selecting one of the logical tunnels to forward the data packet toward the destination end point, the logical tunnel having ingress at the VN node and having an egress at a next VN node on a logical path between the VN node and the destination end point; and

    submitting the data packet to the selected logical tunnel for forwarding toward the next VN node;

    wherein the obtaining the indication of location comprises the v-router;

    transmitting to the CM a location resolution request including a VN identifier corresponding to an identity of the VN, and a name identifier corresponding to the destination end point; and

    receiving from the CM a location resolution response including the VN identifier, the name identifier, and a location identifier corresponding to a current location of the destination end point.

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